So it's no surprise that a cottage industry of privacy marketers now wants to sell them the solution in a $50 piece of hardware promising internet "anonymity" or "invisibility." And as with any panacea in a box, the quicker the fix, the more doubt it deserves.

Last week saw the fast forward rise and fall of Anonabox, a tiny $45 router that promised to anonymize all of a user's traffic by routing it over the anonymity network Tor. That promise of plug-and-play privacy spurred Anonabox to raise $615,000 on the fundraising platform Kickstarter in four days, 82 times its modest $7,500 goal. Then on Thursday, Kickstarter froze those pledges, citing the project's misleading claims about its hardware sources. Other critics pointed to flaws in Anonabox's software's security, too.